31. The rate at change of temperature is called
32. The rate of infiltration normally declines rapidly during the early part of rainstorm event and reaches a constant value after several hours of rainfall. The factors responsible for this phenomenon are - I. the filling of fine soil pores with water, which reduces capillary forces
- II. moistened soil, clay particles to swell and reduce the size of pores
- III. raindrop impact breaking up with soil clumps, splashing fine particles into pores
- I. the filling of fine soil pores with water, which reduces capillary forces
- II. moistened soil, clay particles to swell and reduce the size of pores
- III. raindrop impact breaking up with soil clumps, splashing fine particles into pores
33. The process where the particle moves from the surface to the medium in quick, continuous, repeated cycles is called
34. The obscuring of one celestial body by another, particularly that of the sun or a planetary satellite
35. The river Sutlej, on which the Bhakra Dam has been built, originates from
36. The process of destruction or dying of fronts is called
37. The Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.
38. The reaction is carbonate and bicarbonate ions with mineral is called
39. The plants grown in equatorial regions include
40. The process that may cause physical weathering or mechanical rupture are
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